In Vitro Degradation Behavior of Ti-Microalloyed AZ31 Magnesium Alloy in Simulated Body Fluid

Candan S., Emir S., Candan E.

Journal of Materials Engineering and Performance, cilt.31, sa.1, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 1
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s11665-021-06142-z
  • Dergi Adı: Journal of Materials Engineering and Performance
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Applied Science & Technology Source, Aquatic Science & Fisheries Abstracts (ASFA), Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: AZ31 Mg alloys, biocorrosion, mechanical properties, simulated body fluid
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

© 2021, ASM International.Corrosion and corrosion-related mechanical behaviors of Ti-microalloyed AZ31 Mg alloy (AZ31Ti) in simulated body fluid (SBF) under a dynamic environment were investigated. AZ31 Mg alloy was used as a control alloy. Microstructure analysis of the samples was performed by using a scanning electron microscope and an x-ray diffractometer. Mass loss measurements and corrosion-related tensile tests were carried out by immersing the samples in the SBF solution at 37.5 ± 0.5 °C for 24, 72, and 336 h under dynamic conditions. Potentiodynamic polarization and electrochemical impedance spectroscopy measurements were also employed in the SBF solution at 37.5 ± 0.5 °C. Microstructural studies showed that the β (Mg 17Al 12) intermetallic phases in the AZ31 alloy are dispersed in the microstructure and formed as relatively angular particles, and that the dimensions of the β phases transformed to a smaller size and globular form with Ti microalloying. While the tensile strength and hardness values of AZ31 and AZ31Ti alloys were similar to each other, Ti microalloying showed a considerable increase in the yield strength and elongation. This study suggests that microalloying of AZ31 alloy with Ti is beneficial in terms of their corrosion resistance and corrosion-related mechanical properties in an SBF environment under dynamic conditions.